MIL-I-27197C, MILITARY SPECIFICATION: INDICATOR, AIRSPEED, MACH NUMBER AND MAXIMUM ALLOWABLE SPEED (31-DEC-1985) [S/S BY MIL-PRF-27197D]

MIL-I-27197C, MILITARY SPECIFICATION: INDICATOR, AIRSPEED, MACH NUMBER AND MAXIMUM ALLOWABLE SPEED (31-DEC-1985) [S/S BY MIL-PRF-27197D]., This specification covers nonlighted and integrally lighted combination indicated airspeed (IAS) and mach number indicators.